sebastienros/yessql

Health v2 · maintenance only

Adoption not part of the score

1360 stars · 195 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

YesSql is a .NET document database library that stores documents and indexes in any relational database (SQL Server, PostgreSQL, MySQL, SQLite). It provides NoSQL-style document storage with map/reduce indexing while leveraging the transactional guarantees of SQL databases.

Use cases

• store JSON documents in SQL Server with transactions
• use a document database without deploying MongoDB
• add document storage to an existing .NET application backed by PostgreSQL
• run map/reduce indexes over documents in MySQL
• get RavenDB-like document modeling on a free relational database
• persist POCO documents with SQL querying in .NET Core

When to choose

• your team already runs and trusts a relational database
• you need transactional document storage in .NET
• you want document database semantics without extra infrastructure
• you need free, open-source document storage with map/reduce indexes

When to avoid

• you need a dedicated document database's native scaling or features
• you prefer MongoDB or RavenDB and don't need SQL-backed storage
• you want a full ORM with change tracking and LINQ mappings
• your data model is strictly relational

Facets

library · maturity active

database orm serialization databases backend web-development dotnet cross-platform document-database rdbms nosql dapper csharp

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